Institute Newton C. Braga

Circuit Bench

Burglar Alarm (CB24521E)
This circuit was obtained from the September 1977 issue of Radio Electronics magazine. The circuit is...
Differential Multiplexer (CB5352E)
This circuit was found in an ancient American documentation. The integrated circuit is of the time...
FM receiver (CB16299E)
An FM receiver with good sensitivity and with acceptable sound quality in the strongest stations, can...